Expanding brackets

Expanding brackets

1. To expand brackets, you need to multiply the number outside the bracket by ALL the values inside the bracket

   • For example: 3y(4-2y) is the same as (3y)*(4-2y). However, we don't use '*' in algebra. So it is written as 3y(4-2y).
     • To expand or multiply out of this bracket, we multiply every term inside the bracket by the term outside the bracket.
   • A slightly harder example of expanding brackets is working with negatives.
     • For example, try solving this:
       • • When there is a negative term outside the bracket, the signs of the multiplied terms change
       • In general:
   • Sometimes we need to multiply out brackets and then simplify expressions
     • Try this:

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